10. A large tank filled with water to a height ‘h’ is to be emptied through a small hole at the bottom. The ratio of time taken for the level of water to fall from h to h/2 and from h/2 to zero is
(a) √2 (b) 1/ √2
(c) √2 -1 (d) 1/(√2 -1 )
Answer-c
(33)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)